Ball Screw Assembly
With the vigorous development of new energy vehicles, the demand for electronic control systems is also gradually increasing. As an important component of the chassis components, the braking system has successfully trial-produced EHB external circulation structure ball screw pairs, EMB ball screw pair series products, and R-EPS ball screw pair series products through independent research and development of core technologies. Reliability verification was carried out simultaneously in combination with the independently developed functional testing machine, and it was the first in China to achieve the autonomy of key processes and import substitution. Ball screw assemblies are suitable for all kinds of automotive transmission systems.
Types
FLT ball screw assemblies come in various types, including but not limited to:
- Self-circulating electronic mechanical brake ball screw
- Ball screw of internal circulation electronic mechanical brake
- Ball screw of electronic hydraulic brake
- Ball screw of external circulation rack-assisted electric power steering system
- Ball screw of suspension shock absorption system
Each type of on-board ball screw design is aimed at reducing motion resistance, minimizing friction and ensuring an extremely long service life. With carefully selected high-quality materials and advanced production techniques, our vehicle-mounted ball screws can operate stably under harsh working conditions. In the steering system, it assists in precise control; Within the suspension and braking systems, it ensures high efficiency and stability, providing a solid guarantee for the smooth operation of various complex mechanical systems with outstanding quality.
The on-board ball screw is an innovative solution, suitable for single-component applications in automotive systems that require both precise linear motion and efficient power transmission simultaneously. This type of ball screw has an extremely high load-bearing capacity. It can easily handle the complex stress generated by the frequent operation of the steering system or the dynamic impact of the suspension system on bumpy roads. It is particularly suitable for application scenarios such as the engine compartment and chassis of automobiles where space is limited but performance optimization is strictly required.
Details
1. EHB（Electronic Hydraulic Brake System）
It mainly includes components such as the electronic control unit (ECU), electric hydraulic pump, brake master cylinder, brake wheel cylinder, and pressure sensor. The ECU is the core of the system, responsible for receiving and processing signals from various sensors and controlling the operation of the electric hydraulic pump. The electric hydraulic pump is used to generate the hydraulic pressure required for braking, while the brake master cylinder and brake wheel cylinder convert the hydraulic pressure into braking force. The pressure sensor monitors the pressure of the braking system in real time to ensure that the system operates in a safe and stable state.
2. EMB（Electromechanical Brake System）
It is mainly composed of an electronic control unit (ECU), motor actuators, sensors, etc. The ECU is responsible for receiving various signals from vehicle sensors, such as vehicle speed and brake pedal travel, and quickly calculating the required braking force based on the built-in algorithm. Then, it issues instructions to the motor actuator. The motor actuator acts directly on the brake disc or brake drum to achieve braking operation. Sensors monitor the working status of the braking system in real time to ensure the reliability and stability of the system.
3. REPS（Rack-Assisted Electric Power Steering System）
It is mainly composed of a torque sensor, a vehicle speed sensor, an electronic control unit (ECU), a power-assisted motor and a reduction mechanism, etc. The torque sensor is used to detect the magnitude and direction of the torque applied by the driver to the steering wheel, while the vehicle speed sensor provides information on the vehicle’s traveling speed. The ECU calculates the required assist torque based on these sensor signals and controls the operation of the assist motor. The power steering motor transmits torque to the steering system through the reduction mechanism, providing steering assistance to the driver.
4.Suspension system
It is mainly composed of a torque sensor, a vehicle speed sensor, an electronic control unit (ECU), a power-assisted motor and a reduction mechanism, etc. The torque sensor is used to detect the magnitude and direction of the torque applied by the driver to the steering wheel, while the vehicle speed sensor provides information on the vehicle’s traveling speed. The ECU calculates the required assist torque based on these sensor signals and controls the operation of the assist motor. The power steering motor transmits torque to the steering system through the reduction mechanism, providing steering assistance to the driver.
Features
1. EHB（Electronic Hydraulic Brake System）
- Brake response rapidly: the electronic control unit can quickly sense the braking demand and precisely control the hydraulic system, enabling the braking pressure to be established rapidly. Compared with the traditional hydraulic braking system, the braking response time is significantly shortened, enhancing the vehicle’s emergency braking capability.
- Braking energy recovery highly efficiently: during the vehicle braking process, part of the braking energy can be effectively recovered and converted into electrical energy for storage, which improves the energy utilization rate and reduces the vehicle’s energy consumption and emissions.
- Excellent braking comfort: by precisely controlling the braking pressure, a smooth and gentle braking process can be achieved, reducing the impact during braking and providing a more comfortable braking experience for drivers and passengers.
2. EMB（Electromechanical Brake System）
- Efficient and precise braking: adopting advanced electronic control technology, it can respond quickly to braking instructions, achieve precise braking, significantly shorten braking distance, and greatly enhance driving safety.
- Lightweight design: the hydraulic components in the traditional braking system have been reduced, significantly lowering the overall weight. This helps improve the vehicle’s fuel economy and simultaneously reduces its overall energy consumption.
3. REPS（Rack-Assisted Electric Power Steering System）
- Remarkable assistance effect: it can adjust the power assistance in real time according to parameters such as the vehicle’s traveling speed and steering Angle, providing the driver with appropriate steering assistance and making the steering operation more relaxed and flexible.
- Low energy consumption: compared with the traditional hydraulic power steering system, the REPS system only consumes electricity when steering, significantly reducing the vehicle’s energy consumption.
- High integration: it is easy to integrate with other electronic systems of the vehicle and can achieve a variety of advanced driver assistance functions.
4. Suspension system
- Good comfort: it can effectively filter out road bumps, reduce the vibration and shaking of the vehicle body, and provide a comfortable riding experience for drivers and passengers.
- Outstanding handling stability: by rationally designing the suspension structure and parameters, the driving stability and handling performance of the vehicle can be enhanced, ensuring its safety during high-speed driving, cornering and other situations.
- Strong adjustability: some high-end suspension systems are equipped with adjustable functions, which can adjust the stiffness, damping and other parameters of the suspension in real time according to factors such as the vehicle’s driving state, the driver’s driving style and road conditions, to achieve the best suspension performance.
Applications
1.EHB（Electronic Hydraulic Brake System）
- New energy vehicle: due to the high requirements of new energy vehicles for energy recovery and braking performance, the EHB system has become an ideal choice for new energy vehicles. It can not only increase the driving range of new energy vehicles, but also enhance the overall performance and safety of the vehicles.
- High-performance vehicle: in high-performance vehicles that pursue ultimate performance, the rapid response and precise braking control capabilities of the EHB system can meet the strict requirements for the braking system during high-speed driving and intense driving, providing drivers with an outstanding handling experience.
2.EMB（Electromechanical Brake System）
- Passenger vehicles: it is widely applied in various passenger vehicles such as sedans and SUVs, providing consumers with a safer and more comfortable driving and riding experience. Especially in high-end luxury models, the EMB system, as an important configuration for enhancing vehicle performance and technological feel, is highly favored.
- Commercial vehicles: in the field of commercial vehicles such as trucks and buses, the EMB system can meet their high requirements for braking performance, effectively enhancing the operational safety and efficiency of commercial vehicles.
3.REPS（Rack-Assisted Electric Power Steering System）
- All kinds of vehicles: due to its superior performance and wide applicability, the REPS system is almost suitable for all types of vehicles, including sedans, SUVs, MPVS, commercial vehicles, etc., and has become the mainstream configuration of modern automotive steering systems.
- Autonomous vehicles: in autonomous vehicles, the REPS system, as an important executive component, can precisely execute the steering instructions issued by the autonomous driving system, ensuring that the vehicle travels along the predetermined driving trajectory and providing crucial support for the realization of autonomous driving functions.
4.Suspension system
- Household vehicle: various types of suspension systems are widely used in household vehicles. According to the positioning and requirements of different vehicle models, the appropriate suspension system should be selected to provide a comfortable driving and riding experience as well as good handling performance.
- High-performance vehicle and racing vehicle: in the fields of high-performance vehicles and racing vehicles, the performance requirements for suspension systems are extremely high. Our suspension system, with its outstanding handling stability and adjustability, can meet the strict requirements of these high-performance vehicles for suspension systems during high-speed driving and intense driving, helping the vehicles perform at their best on the track.
FLT has always been committed to providing customers with high-quality and high-performance automotive system products, constantly promoting technological progress and development in the automotive industry. We have a professional R&D team, advanced production equipment and a strict quality control system, which can ensure that every product meets international standards and customer requirements. Whether it’s passenger vehicles, commercial vehicles, new energy vehicles or high-performance vehicles, we can provide you with the most suitable automotive system solutions and work together to create a bright future for the automotive industry.
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